<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
	
	if( request.getParameter("dan").equals(null)  || request.getParameter("dan").equals("")){
	%>
	<script type="text/javascript">
		alert("입력해라");
		history.go(-1);
	</script>
	<%}
	else{
		int gugudan = Integer.parseInt(request.getParameter("dan"));
		for(int i = 1; i<=9; i++){
			out.print( gugudan +"*" + i + " = " +  (gugudan * i));
		}
	}
%>
</body>
</html>